Electrochemical formation of self-organized nanotubular oxide layers on Ti13Zr13Nb alloy for biomedical applications

Abstract

In this work, the anodic formation of self-organized nanotubular oxide layers on Ti13Zr13Nb implant alloy was presented. Anodic oxidation was carried out at room temperature in [1 M] (NH4)2SO4 solution with 1 wt% content of NH4F. The voltage and time of anodization was 20 V for 120 min, respectively. Under proposed conditions, the best arrangement of nanopores was observed. The physical and chemical properties of the anodized surface of the Ti13Zr13Nb alloy were characterized using grazing incidence X-ray di raction, scanning transmission electron microscopy, and atomic force microscopy. It was found that diameter of nanopores varied from 10 to 32 nm. Mechanism of the fabrication of the unique 3D tube-shaped nanostructure of TiO2 on the surface of the Ti13Zr13Nb alloy by electrochemical anodization, has been discussed.